Window fastener



Feb, 18, 1947. D. SPIVAK WINDOW FASTENER Filed Nov. 14, 1945 flay/.0 SP/r/M 'INVENTOR BY ATT RNEY Patented Feb. 18, 1947 UNITED STATES PATENT OFFICE WINDOW FASTENER David Spivak, New York, N. Y. application November 14, 1945, Serial No. 628,468

2 Claims.

1 The invention here disclosed relates to devices for securing or locking windows in partially opened relation.

portion of the base member, serve for mounting Objects of the invention are to provide a iastener of this type which can be readily applied and which while of light, inexpensive construction, will be strong and fully capable of positively securing the windows in desired, partly opened relation.

Special objects are to provide a fastener of the type indicated which can be made up out of sheet metal strip and which will be so constructed that the sheet material will be braced and reinforced to carryall loads or strains to which the device might be subjected.

Other important special objects are to provide a window fastener in which the holding portion of the device may be swung to one side into an inoperative or inactive position and which will be automatically and reliably held in that inactive the device on the side rail [4 of an upper window sash.

The location of the fastener may be selected according to the desired extent of window opening movements.

position so long as its use is not required. Thus tained are set forth or will appear in the course of the following specification.

The drawing accompanying and forming part of the specification illustrates certain present practical embodiments of the invention but structure may be modified and changed as regards such illustration, all within the true intent and scope of the invention as hereinafter defined and claimed.

Fig. 1 in the drawing is a broken front elevation showing a form of the invention applied to a window sash and illustrating the device held in an inoperative position;

Fig. 2 is a broken vertical sectional view as on substantially the plane of line 22 of Fi 1;

Figs. 3 and 4 are similar views showing the device positioned for use in securing a window in partially opened condition;

Figs. 5, 6 and 7 are front views modified forms of the invention.

As appears in the several views, the device can be made up of just two sheet metal parts, a base piece 9 and an overlying, pivotally connected stop piece It].

These two parts may be pivotally connected to illustrating gether at their overlying lower ends by a tubular Usually the fastener is applied to either the left or the right, or fasteners to both side rails of the upper sash, about six inches above the meeting rail l5, about a quarter of an inch inward from the inner edge of the side rail so that the stop piece may be swung out over the inner edge of the side rail, out of locking position, as in Figs. 1 and 2.

To hold the stop piece in the inoperative position, special means are provided, the same being shown in Figs. 1 and 2 as a spring clip I6 bent back from the upper edge of the base piece and held under the head of the upper mounting screw l3. The extreme edge of this holding clip ortion may be flared outwardly to form a lip i1, under which the edg of the locking piece I0 may be forced when it is swung upward at either side of the base piece.

The pivoted lock member ID is shown as doubled back at its upper end at [8 and extended angularly toward the back piece at I!) to constitute a bracing and spacing structure engageable over the upper end portion of the base piece.

To hold the forward stop member In in its forwardly braced, wedging position, Figs. 3. and 4,'the rearward edge of thebrace i9 is shown as notched at 20 to receive and interlock over the forwardly stressed spring tongue portion 2l-struck forwardly at the upper, doubled edge portion of the base piece.

When the notched portion 20 of the brace I9 is interlocked over the forwardlyprojecting tongue 2|, Figs. 3 and 4, the wedge piece [0 will be securely locked in its forwardly tensioned position, in line with the meeting rail 22 of the lower sash, thus constituting a positive stop against further upward movement of the lower sash or downward movement of the upper sash,

Figs. 5, 6 and 7 illustrate different forms of holding means for the swingin wedge piece.

In Fig. 5 spring tongues 23 are partially severed from opposite side edges 'of the base piece and the wedge piece can be releasably secured, swung up at either side of the base piece under one or the other of these spring fingers.

In Fig. 6 a similar construction is illustrated in which spring fingers 24 cut out of opposite edges of the base piece are disposed below instead of above the pivot center 12, the base being extended downwardly below the pivotal center to provide this additional material and the lower extended end being then secured by an extra, third screw 25. i

Fig. 7 illustrates a generally similar construction in which the holding fingers are provided by bending up the lower end of the base plate at 26 and securing it in such relation by a lower screw 25. g In all forms of the invention the device can be quickly and easily secured to the side rail of the sash and the two or three screws used firmly; hold it in place against any possible force that might be applied to it. The second screw used to hold the base plate provides a solid, strong pivot for the swinging stop or wedge piece. When not in use the wedge piece stands off at one side, whereit is held by the'spring clamp i5, 23, 24 or This clamp prevents the stop piece from accidentally shifting into locking position and interfering with the ordinary free opening of the window. When in service position the stop piece is locked and positively held in the window stopping relation by the interlock of the brace piece with the upper end of the base at 2%}, 2i. The spring tension of the sheet metal wedge piecehoids the engaging parts 20, ii, in interlocked relation but the yield in the strip material enables the wedge piece to be drawn forward sufiiciently todisengage these parts and permit the wedge piece to be swung to one side.

ring or disfiguring the window structure.

What is claimed is:

1. A Window fastener comprising a, base piece and a wedge piece, said wedge piece being pivotally connected at one end to said base piece and said base piece having screw holes by which the same may be secured to the side sill of an upper window sash, the wedge piece having a rearwardly extending brace adapted to overstand the base piece when the wedge piece is. swung into position over the base piece, means for interlocking the wedge piece in overstanding relation on the base piece and means for retaining the wedge piece in position swung to one side of the base piece.

2. A window fastener comprising a base piece I and a wedge piece, said wedge piece being pivotally connected at one end to said base piece and i said base piece having screw holes by'which the same may be secured to the side sill of an upper window sash, the wedge piece having a rearwardly extending brace adapted to overstand the base. piece when the wedge piece is swung into position over the base piece, means forinterlocking the Wedge piece in overstandi'ng relation on the base piece and means for retaining the wedge piece in position swung to one side of the base piece, said parts being constructed of sheet metal strip and, said retaining means including spring portions of the base piece yieldingly engageable over the edge portions of the wedge piece.

' DAVID SPIVAK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Hopi" July 8, 1924 

